Cannabis leads US microdosing, with 24.1 million adults reporting lifetime use

MedicalXpress | ماي 04, 2026

Researchers from University of California San Diego have found that microdosing—taking very small amounts of psychoactive substances—is more common among U.S. adults than previously recognized, with cannabis leading by a wide margin. The study, published in the American Journal of Preventive Medicine, estimates that millions of Americans have microdosed substances such as cannabis, psilocybin, LSD ("acid") and MDMA ("ecstasy").